METHOD OF RECEIVING OF PROTECTIVE COATING ON PRODUCTS MADE OF LOW-ALOY AND CARBON STEEL (VERSIONS) Russian patent published in 2009 - IPC B05D1/36 B05D1/38 C09D5/08 C09D1/00 

FIELD: metallurgy.

SUBSTANCE: inventions relate to versions of receiving method of protective coating on products made of low-alloyed and carbon steel, continuous operating in high-temperature up to 500°C flow of combustion materials of natural gas, corresponding substantially water and carbonic acid (CO₂), for instance gas turbine components. The first version of the method consisting in on product surface it is applied at least one layer of composite material and implemented it's drying. Composite material is received by blending of binding sodium or potassium liquid glass with density 1.42-1.44 g/cm³ and modulus 2.85-3.05 with water up to receiving of solution with density 1.12-1.18 g/cm³, and introduction of dry filler of aluminium powder in correlation to solution amount - 1.2-2.1. The second version of the method consisting in on product surface it is applied at least one layer of composite material, received by blending of sodium or potassium liquid glass with density 1.42-1.44 g/cm³ and modulus - 2.85-3.05 with water up to receiving of solution with density 1.12-1.18 g/cm³, by addition of aluminium powder in correlation to solution amount - 1.2-2.1. Then it is implemented layer drying and it is applied layer made of above mentioned binding with density 1.12-1.15 g/cm³. Then it is implemented final drying.

EFFECT: invention provides receiving of coating operating in conditions of cyclic high-temperature loading up to 500°C, and also to increase its durability and corrosion resistance.

12 cl, 3 ex, 3 dwg